Ultrafine ferroferric oxide nanoparticles embedded into mesoporous carbon nanotubes for lithium ion batteries

Guo Gao; Qiang Zhang; Xin-Bing Cheng; Joseph Shapter; Ting Yin; Rongjin Sun; Daxiang Cui

doi:10.1038/srep17553

Ultrafine ferroferric oxide nanoparticles embedded into mesoporous carbon nanotubes for lithium ion batteries

Guo Gao, Qiang Zhang, Xin-Bing Cheng, Joseph Shapter, Ting Yin, Rongjin Sun, Daxiang Cui

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

An effective one-pot hydrothermal method for in situ filling of multi-wall carbon nanotubes (CNT, diameter of 20-40 nm, length of 30-100 μm) with ultrafine ferroferric oxide (Fe₃O₄) nanoparticles (8-10 nm) has been demonstrated. The synthesized Fe₃O₄@CNT exhibited a mesoporous texture with a specific surface area of 109.4 m² g^-1. The loading of CNT, in terms of the weight ratio of Fe₃O₄ nanoparticles, can reach as high as 66.5 wt%. Compared to the conventional method of using a Al₂O₃ membrane as template to fill CNT with iron oxides nanoparticles, our strategy is facile, effective, low cost and easy to scale up to large scale production (∼1.42 g per one-pot). When evaluated for lithium storage at 1.0 C (1 C = 928 mA g^-1), the mesoporous Fe₃O₄@CNT can retain at 358.9 mAh g^-1 after 60 cycles. Even when cycled at high rate of 20 C, high capacity of 275.2 mAh g^-1 could still be achieved. At high rate (10 C) and long life cycling (500 cycles), the cells still exhibit a good capacity of 137.5 mAhg^-1.

Original language	English
Article number	17553
Number of pages	13
Journal	Scientific Reports
Volume	5
Issue number	17553
DOIs	https://doi.org/10.1038/srep17553
Publication status	Published - 3 Dec 2015

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title = "Ultrafine ferroferric oxide nanoparticles embedded into mesoporous carbon nanotubes for lithium ion batteries",

abstract = "An effective one-pot hydrothermal method for in situ filling of multi-wall carbon nanotubes (CNT, diameter of 20-40 nm, length of 30-100 μm) with ultrafine ferroferric oxide (Fe3O4) nanoparticles (8-10 nm) has been demonstrated. The synthesized Fe3O4@CNT exhibited a mesoporous texture with a specific surface area of 109.4 m2 g-1. The loading of CNT, in terms of the weight ratio of Fe3O4 nanoparticles, can reach as high as 66.5 wt%. Compared to the conventional method of using a Al2O3 membrane as template to fill CNT with iron oxides nanoparticles, our strategy is facile, effective, low cost and easy to scale up to large scale production (∼1.42 g per one-pot). When evaluated for lithium storage at 1.0 C (1 C = 928 mA g-1), the mesoporous Fe3O4@CNT can retain at 358.9 mAh g-1 after 60 cycles. Even when cycled at high rate of 20 C, high capacity of 275.2 mAh g-1 could still be achieved. At high rate (10 C) and long life cycling (500 cycles), the cells still exhibit a good capacity of 137.5 mAhg-1.",

author = "Guo Gao and Qiang Zhang and Xin-Bing Cheng and Joseph Shapter and Ting Yin and Rongjin Sun and Daxiang Cui",

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AU - Gao, Guo

AU - Zhang, Qiang

AU - Cheng, Xin-Bing

AU - Shapter, Joseph

AU - Yin, Ting

AU - Sun, Rongjin

AU - Cui, Daxiang

PY - 2015/12/3

Y1 - 2015/12/3

N2 - An effective one-pot hydrothermal method for in situ filling of multi-wall carbon nanotubes (CNT, diameter of 20-40 nm, length of 30-100 μm) with ultrafine ferroferric oxide (Fe3O4) nanoparticles (8-10 nm) has been demonstrated. The synthesized Fe3O4@CNT exhibited a mesoporous texture with a specific surface area of 109.4 m2 g-1. The loading of CNT, in terms of the weight ratio of Fe3O4 nanoparticles, can reach as high as 66.5 wt%. Compared to the conventional method of using a Al2O3 membrane as template to fill CNT with iron oxides nanoparticles, our strategy is facile, effective, low cost and easy to scale up to large scale production (∼1.42 g per one-pot). When evaluated for lithium storage at 1.0 C (1 C = 928 mA g-1), the mesoporous Fe3O4@CNT can retain at 358.9 mAh g-1 after 60 cycles. Even when cycled at high rate of 20 C, high capacity of 275.2 mAh g-1 could still be achieved. At high rate (10 C) and long life cycling (500 cycles), the cells still exhibit a good capacity of 137.5 mAhg-1.

AB - An effective one-pot hydrothermal method for in situ filling of multi-wall carbon nanotubes (CNT, diameter of 20-40 nm, length of 30-100 μm) with ultrafine ferroferric oxide (Fe3O4) nanoparticles (8-10 nm) has been demonstrated. The synthesized Fe3O4@CNT exhibited a mesoporous texture with a specific surface area of 109.4 m2 g-1. The loading of CNT, in terms of the weight ratio of Fe3O4 nanoparticles, can reach as high as 66.5 wt%. Compared to the conventional method of using a Al2O3 membrane as template to fill CNT with iron oxides nanoparticles, our strategy is facile, effective, low cost and easy to scale up to large scale production (∼1.42 g per one-pot). When evaluated for lithium storage at 1.0 C (1 C = 928 mA g-1), the mesoporous Fe3O4@CNT can retain at 358.9 mAh g-1 after 60 cycles. Even when cycled at high rate of 20 C, high capacity of 275.2 mAh g-1 could still be achieved. At high rate (10 C) and long life cycling (500 cycles), the cells still exhibit a good capacity of 137.5 mAhg-1.

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